Question

como hallo m/4 =n/5 siendo ( m+n ) =12

Answer 1

resolviendo

m/4 =n/5

m/n = 4/5

entonces

m = 4k

n = 5k

lo reemplazamos

( m+n ) =12

4k + 5k = 12

9k = 12

k = 12/9

simplificando

k = 4/3

reemplazamos

m = 4k

4(4/3)

m = 16/3

n = 5k

5(4/3)

n = 20/3